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If the coefficients of 2nd, 3rd and 4th terms of `(1+x)^(2n)` are in A.P., then n equals

A

`(7)/(2)`

B

`(11)/(2)`

C

`(5)/(2)`

D

3

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WB JEE PREVIOUS YEAR PAPER-QUESTION PAPER 2007-MULTIPLE CHOICE QUESTIONS
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